Merge branch 'stable-3.1' into stable-3.2

* stable-3.1:
  Update git submodules
  Update git submodules
  Update git submodules
  Update git submodules
  Update git submodules
  Update git submodules
  Update git submodules
  Update git submodules
  Update git submodules
  Update git submodules
  Update git submodules
  Update git submodules
  ListGroups: Accept --ownedby as an alias of --owned-by
  Update git submodules
  Update git submodules
  Fix documentation of owned-by option in groups REST API
  Update git submodules
  AssigneeStatusUpdate: Add missing license header
  ListTestPlugin: Add missing license header
  Update git submodules
  Update git submodules
  gerrit-config.txt: cache-automerge is for "merge" commmits

Change-Id: I97b6fcebd85114a764a27271a2804f9105d38e76

java/com/google/gerrit/acceptance/rest/ListTestPlugin.java

@@ -1,3 +1,17 @@
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 package com.google.gerrit.acceptance.rest;
 
 import com.google.common.collect.ImmutableList;